SM-3 Standard missiles have been the backbone of the US Navy’s ballistic missile defense plans for many years now, and are beginning to see service in the navies of allies like Japan. Their test successes and long range against aerial threats have spawned a land-based version, which end up being even more important to the USA’s allies.
In July 2008 the US Missile Defense Agency began considering a land-based variant of the SM-3, largely due to specific requests from Israel. Israel currently fields the medium range Arrow-2 land-based ABM (Anti-Ballistic Missile) system, and eventually elected to pursue the Arrow-3 instead of SM-3s. Once the prospect had been raised, however, the US government decided that basing SM-3 missiles on land was a really good idea. The European Phased Adaptive Approach to missile defense is being built around this concept, and other regions could see similar deployments.